Answered

IDNStudy.com, kung saan nagtatagpo ang mga tanong at sagot. Ang aming komunidad ay narito upang magbigay ng detalyadong sagot sa lahat ng iyong mga katanungan.

give me some examples of quadratic equation by completing the square with given problem questions

Sagot :

Correanidn
 It works like this:
First, I put the loose number on the other side of the equation:x2 – 4x – 8 = 0 
x2 – 4x = 12 Then I look at the coefficient of the x-term, which is –4 in this case. I take half of this number (including the sign), giving me –2. Then I square this value to get +4, and add this squared value to both sides of the equation:x2 – 4x + 4 = 8 + 4 
x2 – 4x + 4 = 16This process creates a quadratic that is a perfect square, and factoring gives me:(x – 2)2 = 16

tapos, extract the sq. root of both sides:)

x=6, -2